MQ-2 Smoke Sensor Module
🔥 MQ-2 Smoke Sensor Module
Gas & Smoke Detection for Safety and Automation Projects
The MQ-2 sensor module detects various gases, including LPG, methane, butane, propane, hydrogen, smoke, and alcohol vapors. It is widely used in gas leakage detection systems for homes, offices, and industries. The module provides both analog and digital outputs, making it compatible with Arduino, ESP32, Raspberry Pi, and other microcontrollers.
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| Model | MQ-2 |
| Operating Voltage | 5V DC |
| Gas Detection Range | 300 – 10,000 ppm |
| Output | Analog (A0), Digital (D0) |
| Preheat Time | 20 seconds (recommended warm-up 24 hrs for best accuracy) |
| Sensor Type | Semiconductor (SnO₂) |
| Dimensions | ~32mm × 20mm |
✅ Features
🔹 Detects LPG, propane, methane, hydrogen, smoke, and alcohol vapors
🔹 Adjustable sensitivity via onboard potentiometer
🔹 Digital output for threshold detection
🔹 Analog output for concentration measurement
🔹 Long life and low cost
🧠 Applications
🏠 Home safety gas leakage alarms
🏭 Industrial gas leak detection
🚗 Automotive safety systems
🤖 Robotics & environmental monitoring
https://www.youtube.com/watch?v=hSYCt7LrYxQ&pp=ygUTI2x0aW1xMnJlc3VsdHN0b2RheQ%3D%3D